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Post Info TOPIC: Second Rodeo with Auto-Rx
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Second Rodeo with Auto-Rx
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I first used Auto-Rx on my 1997 Volvo 960 at around 67K miles back in 2005. The previous owner must have used conventional oil in the car because there was a considerable build up of varnish though out the cams and rockers. It looked like someone had melted a chocolate bar over over everything. Once the cleaning was completed, the cams and rockers looked like a shinny new penny plus the car ran as smooth as anyone could ask for.

Well last November I did an oil change and tossed in a bottle of Auto-Rx I had laying around. It was time since I've added a little over 60K miles on the car since the last Auto-Rx treatment and my fuel mileage had dropped two to three mpg's. I'm already seeing much better fuel mileage after a couple thousand miles into the cleaning cycle.

I'll be doing my year end oil change next month with Mobil One 10W30 High mileage oil for the rinse before putting the car away for the winter. I can't wait to see what the engine looks like next summer, after the rinse oil has some time to work. I checked the oil last week and haven't seen it that dirty since the last time I did a treatment back in 2005. The cams and rockers BTW didn't look that bad when I changed the oil last year. They had some light to medium varnish on them but it looked like normal deposits on an engine with a few miles on it.

The car is only used on the highway and sees minimal urban driving.

The other thing I forgot to mention was this 2.9 liter inline 6, 24V dual over head cam engine has a quirk that drives owners nuts. It has a problem with sticking lifters when the motor gets some miles on it. The ticking noise will drive you nuts. The normal remedy is to take the car out on the highway for an Italian Tune-up as they say. Drop it into low and drive it at 4,000 rpms for a few miles to unstick the hydraulic lifters.

I was also having that problem at the time of my last oil change. After a hundred miles or so of normal driving with the Auto-Rx in the crankcase the sticking lifter magically remedied itself. I've never seen the sticking lifter problem reoccur during the cleaning cycle.



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